<template>
  <!-- 角色管理 -->
  <div class="role_list">
    <div class="btns">
      <el-button type="primary" size="small" @click="toAdd">添加</el-button>
    </div>
    <el-table :data="roles" size="small" v-loading="loading">
      <el-table-column type="index" :index="1" label="序号" width="150" />
      <el-table-column prop="name" label="角色名称" />
      <el-table-column label="操作" align="center" width="180">
        <template slot-scope="scope">
          <a @click.prevent="deleteHandler(scope.row.id)" style="color: #008964"
            >移除</a
          >
          <a @click.prevent="toAuthorization(scope.row)" style="color: #008964"
            >授权</a
          >
          <a @click.prevent="toUpdate(scope.row)" style="color: #008964"
            >修改</a
          >
        </template>
      </el-table-column>
    </el-table>
    <!-- 模态框 -->
    <el-dialog :title="title" :visible.sync="visible">
      <el-form ref="role_form" :model="form" :rules="rules">
        <el-form-item label="角色名称" label-width="80px" prop="name">
          <el-input v-model="form.name" autocomplete="off" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="visible = false">取 消</el-button>
        <el-button type="primary" size="small" @click="saveRoleHandler"
          >确 定</el-button
        >
      </div>
    </el-dialog>
    <!-- /模态框 -->
    <!-- 授权模态框 -->
    <el-dialog title="授权" :visible.sync="authorization_visible" width="80%">
      <el-form :model="role">
        <!-- {{role}} -->
        <el-form-item label="角色名称" label-width="80px">
          {{ role.name }}
        </el-form-item>
        <el-form-item label="权限" label-width="80px">
          <el-cascader-panel
            v-model="role.privileges"
            :options="options"
            :props="props"
            clearable
          />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" @click="authorization_visible = false"
          >取 消</el-button
        >
        <el-button type="primary" size="small" @click="authorizationHandler"
          >确 定</el-button
        >
      </div>
    </el-dialog>
    <!-- /模态框 -->
  </div>
</template>
<script>
import request from "@/utils/request";
import qs from "querystring";
export default {
  data() {
    return {
      form: {},
      loading: false,
      visible: false,
      authorization_visible: false,
      title: "添加角色",
      role: {}, // 当前角色
      roles: [], // 角色列表
      props: {
        multiple: true,
        value: "id",
        label: "name",
        emitPath: false,
        checkStrictly: true,
      },
      options: [],
      rules: {
        name: [
          { required: true, message: "请输入角色名称", trigger: "change" },
        ],
      },
    };
  },
  created() {
    // 加载角色
    this.loadRoles();
    // 加载权限
    this.loadPrivileges();
  },
  methods: {
    // 去修改
    toUpdate(row) {
      this.form = row;
      this.visible = true;
    },
    authorizationHandler() {
      request
        .request({
          url: "/role/authorization",
          method: "post",
          headers: {
            "Content-Type": "application/x-www-form-urlencoded",
          },
          data: qs.stringify(this.role),
        })
        .then((response) => {
          this.authorization_visible = false;
          this.$message({ message: response.message, type: "success" });
          this.loadRoles();
        });
    },
    saveRoleHandler() {
      this.$refs["role_form"].validate((valid) => {
        if (valid) {
          request
            .request({
              url: "/role/saveOrUpdate",
              method: "post",
              headers: {
                "Content-Type": "application/x-www-form-urlencoded",
              },
              data: qs.stringify(this.form),
            })
            .then((response) => {
              this.visible = false;
              this.$message({ message: response.message, type: "success" });
              this.loadRoles();
            });
        } else {
          return false;
        }
      });
    },
    loadPrivileges() {
      this.loading = true;
      request.get("/privilege/findPrivilegeTree").then((response) => {
        this.foo(response.data);
        this.options = response.data;
        this.loading = false;
      });
    },
    // 递归去除权限中的空children
    foo(privileges) {
      for (const p of privileges) {
        if (p.children && p.children.length === 0) {
          delete p.children;
        } else {
          this.foo(p.children);
        }
      }
    },
    toAdd() {
      this.form = {};
      this.visible = true;
    },
    loadRoles() {
      request.get("/role/cascadePrivilegeFindAll").then((response) => {
        // 将权限转换为id的数组
        response.data.forEach((item) => {
          item.privileges = item.privileges.map((p) => {
            return p.id;
          });
        });
        this.roles = response.data;
      });
    },
    deleteHandler(id) {
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        request.get("/role/deleteById?id=" + id).then((response) => {
          this.$message({ type: "success", message: response.message });
          this.loadRoles();
        });
      });
    },
    toAuthorization(record) {
      this.role = record;
      this.authorization_visible = true;
    },
  },
};
</script>
